Imerintsiatosika weather in December

In December, Imerintsiatosika sees average daytime highs of 26°C and overnight lows near 17°C, with 212 mm of rain across 18 wet days and about 13.1 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 06 min at the start of December to 13 h 06 min by month's end. Set against the rest of the year, December is Imerintsiatosika's 10th-clearest and 12th-windiest month. For the whole year in context, see Imerintsiatosika's year-round climate.

Daytime high
26°
2nd warmest
Overnight low
17°
10th coldest
Rainfall
212 mm
18 wet days
Daylight
13 h 06 min
5:13 AM – 6:21 PM
Cloud cover
69%
10th clearest
Wind
9 km/h
12th windiest
Solar energy
6.38 kWh/m²
Travel score
5.3
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Imerintsiatosika reaches about 26°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 28°C. Set against its neighbours, December runs on par with November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12716
22716
32716
42716
52716
62716
72716
82716
92716
102717
112717
122717
132617
142617
152617
162617
172617
182617
192617
202617
212617
222617
232617
242617
252617
262617
272617
282617
292617
302617
312617

Imerintsiatosika weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 17°30521.9134.7
Feb26° / 17°27019.312.64.9
Mar26° / 17°14715.212.15.8
Apr25° / 15°387.511.67.4
May23° / 13°152.911.18.1
Jun21° / 10°40.810.98.1
Jul20° / 10°41117.9
Aug21° / 10°40.911.48.4
Sep24° / 11°71.711.98.7
Oct26° / 13°456.812.47.5
Nov27° / 15°11112.112.96.3
Dec26° / 17°2121813.15.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13763
23763
33664
43664
53664
63466
73367
83367
93367
103169
113169
123070
132872
142773
152773
162674
172674
182674
192674
202674
212674
222674
232674
242674
252674
262674
272575
282575
292575
302476
312476

Chance of precipitation in December

Any precipitation

Imerintsiatosika gets around 212 mm of rain over 18 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 58% and peaks near 66% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
152
252
353
453
553
654
754
854
955
1055
1156
1256
1357
1458
1558
1659
1759
1859
1960
2060
2160
2261
2361
2462
2563
2663
2764
2865
2965
3066
3166

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the humid band about 56% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11541440
21540450
31440460
41439471
51338481
61338491
71237501
81236511
91135531
101135531
111034551
121033552
13933562
14932572
15832582
16731602
17731593
18631603
19631603
20532603
21532603
22432613
23432613
24432604
25331624
26331624
27331615
28330625
29329635
30329626
31228646

Wind in December

Winds average 9 km/h in December, the calmest month.

Across December, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 06 min at the start of December to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:09 AM to 5:20 AM, and sunset from 6:12 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:096:12
213.15:096:13
313.15:096:14
413.15:096:14
513.15:096:15
613.15:106:15
713.15:106:16
813.15:106:17
913.15:106:17
1013.15:116:18
1113.15:116:18
1213.15:116:19
1313.15:126:19
1413.15:126:20
1513.15:126:20
1613.15:136:21
1713.15:136:22
1813.15:146:22
1913.15:146:23
2013.15:146:23
2113.15:156:24
2213.15:156:24
2313.15:166:24
2413.15:166:25
2513.15:176:25
2613.15:176:26
2713.15:186:26
2813.15:186:27
2913.15:196:27
3013.15:196:27
3113.15:206:28

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.38 kWh/m².

For context, solar energy here swings from a low near 4.11 kWh/m² to a high of 6.77 kWh/m² in November across the year — December's 6.38 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.3Intense
186.3Intense
196.3Intense
206.3Intense
216.2Intense
226.2Intense
236.2Intense
246.1Intense
256.1Intense
266.1Intense
276.0Intense
286.0Bright
296.0Bright
305.9Bright
315.9Bright
Planning a trip in December

Hazard calendar for Imerintsiatosika

In seasonPeak

In December, Imerintsiatosika sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Imerintsiatosika's monsoon runs December–March, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Imerintsiatosika?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.3
Sightseeing
10th-best month of the year
5.2
Beach & pool
8th-best month of the year

December is a reasonable time to visit Imerintsiatosika for sightseeing.

What to pack for Imerintsiatosika in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Imerintsiatosika sees daytime highs around 26°C and nights near 17°C. Pack rain gear and sun protection. Worth having: light clothes. About 18 days see rain.

rain gearsun protectionlight clothes

UV index in Imerintsiatosika in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Imerintsiatosika peaks around February 10 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 7 (high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeFeb 10UV 16Jun 17UV 7
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar14Extreme
Apr11Extreme
May9Very high
Jun7High
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec15Extreme

Air quality in Imerintsiatosika in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Imerintsiatosika is worst in October — around 24 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (January, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1723 µg/m³Jan 157 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb9Good
Mar11Good
Apr14Moderate
May21Moderate
Jun22Moderate
Jul21Moderate
Aug18Moderate
Sep15Moderate
Oct24Moderate
Nov17Moderate
Dec8Good
Location & terrain

Where is Imerintsiatosika?

Imerintsiatosika sits at 19.0°S, 47.3°E, 1,296 m above sea level, in Madagascar. The nearest listed city is Arivonimamo, 15 km away.

Topography around Imerintsiatosika

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Imerintsiatosika.

Within 3 km, the terrain around Imerintsiatosika has only modest variations in elevation — a maximum elevation change of 148 m around an average of 1,305 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 425 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,760 m.

The land around Imerintsiatosika is covered by cropland (55%) and grassland (34%) within 3 km, grassland (52%) and cropland (45%) within 16 km, and grassland (61%) and cropland (27%) within 80 km.

3 km
148 m
16 km
425 m
80 km
1,760 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Arivonimamo 15 km · Ambohidratrimo 22 km · Antananarivo 24 km · Ivato 27 km · Alarobia 44 km · Ambatolampy 46 km · Ambohitrolomahitsy 50 km · Manjakandriana 51 km

Madagascar travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$599
2025
Happiness
4.2 / 10
World Happiness, 2025
Safe drinking water
22%
of population, 2024
Road deaths
29.2
per 100k/yr, 2019
Income group
Low
World Bank
English
Low
EF EPI 457
Religion
Church of Jesus Christ in Madagascar/Malagasy Lutheran Church/Anglican Church 34%Roman Catholic 32%none 22%other Christian 8%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Imerintsiatosika (-18.9833°, 47.3167°, elevation 1,296 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).